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Tire coupling tire body is one of the necessary spare parts of tire coupling, correspondingly divided into UL, LA, LB tire bodies. Tire couplings are divided into two types: convex type and concave type. The convex type is divided into three types: integral type with frame, integral type without bone and radial cut type. The inner side of the tire ring is bonded to the steel frame by a vulcanization method, and the bolt holes on the frame are welded with nuts.